Some of these genes are suspected to have important roles in normal growth and development, and the loss of one copy of each of these genes likely underlies delayed development
[encyclopedia.pub]
short philtrum, thick eyebrows, keloids, immune dysregulation, dysmorphic features, and again, delayed psychomotor development, but with normal postnatal growth [11].
[cureus.com]
[…] publication has reported hypotonia, congenital cardiac malformations, sensorineural and conductive hypoacusis, absence seizures, tonic-clonic seizures, difficulty in social development
[cureus.com]